Hello,

This monitor KDS VS195 was working just fine yesterday. I was going to sleep and turned the monitor off and left the computer on as a download was taking place.

This morning I got up and turned on the monitor. All I can see is a vertical strip about 0.5 inches in the middle of the screen. The vertical strip contains my desktop. I know because I can see my desktop background and if I move the mouse around I can faintly see the cursor move by. The strip itself is colorful. Everything else to the left and right is black.

All I see is this vertical strip. It seems my entire desktop has been squished into this 0.5 inches of width. I have plugged this monitor into other computers (with different video cards) and I get the same result. I have degaussed (in desperation) but to no avail. I cannot access the on-screen menus to attempt to do anything else (hard to see anything on 0.5 inches of squished screen).

Can anyone please help me out. Any insights would be helpful. What could be wrong? A transistor blown? Is this something I can repair myself with some sodering?

Frustrated and upset. Please help !!

Hi,
Check the vretical output section for bad solder connections common on this set and see if any look cracked or broke if not then you may have a output ic failure or a coupling cap thats opened up in the vertical section.
Good luck and be careful!
Regards,
Cid

Hi Cid I take it you meant Horizontal stage not vertical.

Rich

Hi Rich,
yes I meant connections in the hor section if I am reading his complaint correctly.I assume he is discribing hor collapse ][ . since he says a half inch vertical line as in narrow pic not hor line as in = any way both are going to be solder connections or a componet failure.
Regards,
Cid
P.S. Rich any luck on your e500 failure?

Cid,

Thank you for the reply (and a nod of gratitude to the others who responded).

Forgive me please but I am a newbie at this. What do you mean when you say "Check the vertical output section" ?

How do I know I have a "output ic" failure? Or my "coupling cap" is bad ? Where do I get replacements and how much work is it to replace it ?

Is it just a matter of sodering?

Hi,
As I said in my last post can you give me a little better idea of what you see on the screen as in if your picture is black on the sides ][ that would be horozontal collapse or black on the top and bottom = that would be vertical collapse this will help all of us to guide you to the right area alot quicker.
Regards,
Cid

the picture is black on the left and right sides. the vertical strip stretches from the top of the screen to the bottom.

it is as if i have black on the left. black on the right. and 0.5 inches of color right smack in the middle. the color stretches from top of the screen to the bottom of the screen.

how much would a local repair shop charge for this ? or is this something i can tackle on my own ?

Hi,
OK what you have is partial horizontal collapse do you have any electronics background? If you do you might try and check for bad solder connections in the horzontal stages around the flyback and the surrounding areas if you do not have any electronics background I would suggest you take it into a shop because this is the area of the monitor that generates the High voltage for the set and if you are not comfortable working in this area you can easily do more harm than good. As for the cost it will depend on the area you live in and the type of work that has to be done on the set. In my shop this repair would average around $65.oo US dollars.
Regards,
Cid

Cid,

After going over the solder connections what would be the next likely component to malfunction? I have a vertical bar about 1-2 inches on my monitor screen. I can see some of the desktop. The picture is compressed.

Also why is it that monitors usually go bad around the 5th year while tv's last 10, 20 years without any problems?

Please post for others and please email me because I'm not too keen on web posting and how to get the message you might leave.

I do have an electronics background, but not in the repair of televisions or monitors. I do not have special equipment.

A few screwdrivers, multimeter, solder and iron is all I have.

Thanks for your time. un_sospiro@yahoo.com

Hi all,
I might have a similar problem than what you are discussing. In my case, the screen is completely visible, but it is stretched out way too far. If I bring the monitor menu (OSD), I am able to adjust all of the functions except for the horizontal resize. I can move the picture horizontally, but I can not resize it. I can also move the picture vertically and it also allows me to resize it.
So what I have right now is my desktop is beyond the limits of the physical screen so I only see a middle portion of it.
I know you guys were talking about horizontal output stage of the circuitry. I am not sure where on the PCB its located. I got the monitor apart, and I have the mainboard out of the enclosure. I looked at the soldering and nothing appears out of ordinary.
Does anyone have an idea on which part of the board is the horizontal output stage.
Any help on this would be really appreciable.
Thanks

Just to make sure, the monitor that I have is KD-1911.
I went to
https://gullfoss2.fcc.gov/prod/oet/cf/eas/reports/GenericSearch.cfm

and searched for the EVO KD-1911. I found a schematic and a block diagram for the monitor, and the block diagram was somewhat helpful in identifing the circuitry. It shows a TDA4856 H/V Processor which I found on the mainboard. From the processor there are several connections and one of them is going to H-size/Pincushion block. I believe thats the block that is faulty. I am not sure what that block consists of, or where on the board its located. I believe someone mentioned that there is a transistor for that block that might be faulty. Is there a part number for it so I can easily find it. If someone knows exactly what the H-size/pincushion block consists of, it would be very helpful if you could explain where on the board those parts are located.
Thanks in advance for all the help.
Ivan

P.S. The schematic didn't help any at all, since it was in pdf and the resolution was horrible on it. I couldn't read any of the part numbers off of that schematic diagram.

Hi on the schematic to the right of the HOT Q413 are 3 diodes 1 D414 across c to e of Q413 and 2 others D413 & D4?? (Schematic to fuzzy)in series from c to e of Q413.

Check the D4?? for short circuit and C432 if electrolytic also Q414.


Rich

Ivan -

You could have insufficient HV from the FBT - this will stretch the picture out both ways, like a magnified effect. Most cases it means a bad FBT.


The other fellow could have either a bad HOT or a bad FBT too. The FBT in the KD1911 is a pretty common fail part, I believe I stock it if you want to purchase. Usually its a good idea to change the HOT when you replace a FBT.

I have a VS190 (KD_1911) with problems in the H/V, I searched for the schema but i didnīt find it. Please anyone could help me sending it to my mail farlight_2003@yahoo.es

Thanks..